环境温度影响了面包小麦主要发育,昼夜和光受体基因的共同表达网络
Tibor Kiss1,2, Ádam D Horváth3, András Cseh3
1HUN-REN Centre for Agricultural Research, Agricultural Institute, 2462, Martonvásár, Hungary. kiss.tibor@atk.hu.
Scientific reports
|July 30, 2025
概括
环境温度通过影响参与开花和茎延长的关键基因,显著影响面包小麦的发育. 了解这些遗传相互作用对于小麦适应气候变化至关重要.
科学领域:
- 植物分子生物学 植物分子生物学
- 农业科学 农业科学
- 遗传学和基因组学 遗传学和基因组学
背景情况:
- 面包小麦的发育涉及生成和茎延长阶段,温度对后者具有关键影响.
- 昼夜节律,光受体和发育基因有动态的相互作用,塑造小麦对环境线索的基因型反应.
- 了解这些相互作用对于提高作物弹性和适应气候变化至关重要.
研究的目的:
- 研究昼夜节律,光受体和面包小麦的关键发育基因之间的动态相互作用.
- 确定基因表达模式与环境条件 (温度,本土化) 之间的关系.
- 阐明小麦发展中环境驱动的可塑性的遗传基础.
主要方法:
- 研究了三个冬季面包小麦品种,具有不同的遗传背景和发育模式.
- 分析了发育 (VRN1-3,PPD1),昼夜 (CCA1,PRR95,TOC1,LUX,ELF3,GI,CO1) 和光受体 (PHYA-C,CRY1-2) 基因的每日基因表达.
- 在受控的植物环境下利用基于相关性的网络分析 (18°C本地化/非本地化,25°C本地化).
主要成果:
- 证实了VRN1和VRN3之间的积极关系,这对于所有处理方法的开花调节至关重要.
- 观察到VRN2的温度依赖的白天活动,特别是在晚期开头品种的18°C.
- 确定了关键的昼夜基因 (CCA1,TOC1,LUX) 和GI/LUX和PHYC/ELF3之间的显著相关性,在很大程度上独立于环境.
- 在本地化植物中,在18°C时发现PPD1表达的增加,特别是在晚期开头的品种中.
结论:
- 基因表达模式揭示了对小麦发育和开花至关重要的复杂,环境影响的相互作用.
- 昼夜基因之间的温度独立关系突出了它们在花调节中的基本作用.
- 在小麦品种中表现出显著的遗传可塑性,为生态适应和气候变化弹性提供了洞察力.
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